Finding the Fourth Proportional to 20,617,726.99, 28,450,803.97 and 11,916,463.18
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Solution
The fourth proportional to 20,617,726.99, 28,450,803.97 and 11,916,463.18 is: 16,443,760.17
Step by Step Solution
- Step 1: Write the proportion equation
20,617,726.99 : 28,450,803.97 = 11,916,463.18 : x - Step 2: Convert to fraction form
20,617,726.99/28,450,803.97 = 11,916,463.18/x - Step 3: Cross multiply
20,617,726.99x = 28,450,803.97 × 11,916,463.18 - Step 4: Simplify right side
20,617,726.99x = 339,032,957,913,507.56 - Step 5: Solve for x
x = 339,032,957,913,507.56/20,617,726.99 - Step 6: Final answer
x = 16,443,760.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.